Improved machine for cleaning- sand



tient sans glatten-1; (twine.

EDWIN BENNETT, OF BALTIMORE, MARYLAND, ASSIGNOR TO HIMSELF AND WILLIAM T. GILLENDER, OIF-PHILADELPHIA, PENNSYLVANIA.

Letters Patent No. 92,568, dated July 13, 1869.

IMPROVED MACHINE FOR CLEANING SAND. i

The Schedule referred t in these Letters Patent and making part of the same.

To all whom tt may concern Be it known that I, EDWIN BENNETT, of the city and county of' Baltimore, in the 'State of' Maryland, have invented a new and improved Machine forCleausing Sand; land I do hereby declare that the following is a full, clear, and exact description thereof', reference being had to the accompanying drawings, making part of this specification, in whieh- Fignrerl is a plan view of' the machine complete.

Figure 2 is a section taken longitudinally through fig. 1 in a Vertical plane, indicated by red line x al'.

v Figure 3 is an enlarged sectional view of' that part or" the machine from'which the sand is' finally discharged pure.

Similar letters of reference indicate corresponding parts in the several figures. This invention relates to machinery which is designed for cleansing silicious sand, and preparing it for' use in the manufacture of glass, and for other purposes.

To enable others skilled in the art to understand my invention, I will describe its construction and operation.

In the ,accompanying drawings, A represents a trough, which is supported in a horizontal plane upon sills A A', and vprovided inside with a horizontal rotary shaft, B, from which radiates a number of arms or blades, b b, as shown in fig. 1.

At one end of' this trough A, a screen, C, is arranged, in an inclined plane, beneath which screen is a pipe, a, through which water is caused to ilowinto the trough A, across the inflowiug stream of sand through the screen C.

The blades or arms 1),-011 shaft B, maybe arranged spil-ally around this shaft, or in any other manner which will cause the sand to be slowly moved to that end of the trough A furthest from the said screen, at which end is a discharge-spout, c, from which the sand, with its impurities, is delivered upon a screen-bottom chute, D.

The screen-bottom chute D is sustained in such manner that it will receive a shaking or vibratory motion from an eccentric, j, which is upon a short shaft carrying avpiniou spur-wheel, t'.

This wheel z' receives motion from ay spur-wheel, h, on shaft B, through the medium of' spur-wheels hl h2, and shaft B may receive rotary motion from any convenient source.

Directly beneath the screen-portion of the chute D is a trough, E, whichmay be made of -any suitable length, and which is arranged in a horizontal plane, either in a plane parallel to the trough A, or at any desired angle with respect thereto.

If desirable, the trough E maybe composed of several sections united, so that it can be shortened when desired.

Within the longest trough, E, is a conveyer, F, composed of several sections of shafts, having screwthreads or"'i`eathered blades on their sui-laces.

These screw-sections are supported within the trough E by spiders j' and short removable coupling-journals s, which latter have' prislnatic end s, fitted into corrcspondiug sockets .formed in the ends ofthe screw-sections.

The journals s are removable, in order that new ones may be substituted inv their places when the old ones wear out, asthey will be liable to do, in conscquence of the grinding-action of the sand.

Near that end ot the trough E furthest from the chute D, and extending transversely across the trough, is a support, d, for a spout, g, which spout is inclined in an opposite direction to the feed of the conveyer, and is intended to direct a current of' water toward the chute D, near which is a spout, y', for the escape of water, mixed with impurities washed from the pure.

sand, from the trough.

Beneath the chute g, the conveyer passes through a tube, G, which may be made of any suitable length, and which enters a chamber, e, in trough E, from which the pure sand is discharged over an inclined plane, e'.

The drawings represent the tube G, cylindricalaml closely fitting that portion of the screw-shaft which passes through it; but I do not confine myself to they precise form of' this tube, as other equivalent means may be employed for effecting the same result, to wit, the packing of thc sand, at or near its point of: discharge from trough E, in such manner as to separate it from the body of water in this trough, and deliver the sand comparatively dry.

Operation.

Motion being given to theshaft B, screw-bottom chute D, and conveyer F, the' impure sand is delivered into the trough A, through the screen C, which latter separates lumps, stones, sticks, and other large substances, t'rom the sand.

In this trough A, the sand is thoroughly washed, a large quantity of water being supplied to it through the pipe' a.- A

From the trough A, the sand and its impurities flow through the spout o, upon the screen-bottom chute D, which allows all the particles of' matter, of a given degree of neness, and also the water, to fall into the trough E, while the coarser particles of matter flow ofi the lower end of this chute.

The conveyer F carries the sand along the bottom of the trough E, toward the tube Gr, and subjects the sand to the action ofan opposing current of water, flowing from the spout q toward the chute D, and also to the action of a current of water, iiowing from said chute D with the sand.

The two currents of water will meet at or near the spout y', and i'low oii, carrying with themvthe particles of' matter which are lighter than the sand.

The sand is carried along horizontally through the trough E, and forced through the tube G into a chamber, c and when this chamber becomes full, and the sand begins to ow over the -iuclined plane e', the resistancewith which the sand in the tubes G meets, in consequence of the body of sand in the chamber e, will cause the conveyer to pack the sand in the tube, and thus compress a large portion of the water out of it.

By this means, I avoid all the object-ions attending machinery hitherto employed for washing and purifying sand, in which elevators are used. I do not elevate the sand, but carry it through the entire process of washing in horizontal planes, and theudeliver it, nearly free from water, whereA it can be conveniently carried off for use.

Having described my invention,

What I claim as new, and desire to secure by Letters Iatent, is

1. v.'Ihe horizontally-arranged washing-trough A, provided with a. screen, 0, and a washing-device, in f combination with the horizontally-arranged trough E, provided with a conveyer, F, and a screen-bottom chute, D, substantially as described.

2. The arrangement of the inuX-spout g, and the efiiux-spout g', in combination with the horizontal trough E, a conveyer, F, and a screeu-botton1 chute, D, substantially as described.

. 3. The tube G, or its equivalent, applied to the conv'eyer lE, arranged horizontally, and combined with a saml-washinfor machine, substantially as described. i

4. The receiving-chamber e, in combination with a tube, G, or its equivalent, a trough, E, and a conveyer, E, substantially as described.

5. The inclined plane e', over which the sand is dis` charged from the trough E, having its highest point above the axis of thevconveyer F, substantially aS described.

EDWIN BENNETT. Witnesses: WM. G. OuR,

W. T. FRANCE.- 

